Kinematics (NEET Physics): Questions 126 - 130 of 229

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Question number: 126

» Kinematics » Motion in a Straight Line

MCQ▾

Question

A motor car is travelling at 50 m/s on a circular road of radius 600 m. It is increasing its speed at the rate of 4 m/s 2. Its net acceleration is (in m/s 2) –

Choices

Choice (4) Response
a.

4.8

b.

5.7

c.

2

d.

0

Question number: 127

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A particle moves in a circle of radius 20cm with a linear speed of 10m/s. The angular velocity will be –

Choices

Choice (4) Response
a.

100 rad/s

b.

50 rad/s

c.

25 rad/s

d.

75 rad/s

Question number: 128

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A car driver is negotiating a curve of radius 200 m with a speed of 15 km/hr. The angle through which he has to lean from the vertical will be –

Choices

Choice (4) Response
a.

tan114

b.

tan1180

c.

tan112

d.

tan1140

Question number: 129

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A particle is moving in a circular path with velocity varying with time as v = 1.5t-+ 2t. If the radius of circular path is 2 cm. the angular acceleration at t = 2 sec will be –

Choices

Choice (4) Response
a.

400 rad/sec 2

b.

4 rad/sec 2

c.

0.4 rad/sec 2

d.

40 rad/sec 2

Question number: 130

» Kinematics » Motion in a Plane

MCQ▾

Question

A particle is moving in a plane with a velocity given by, u = u0 i + (∞a cos ∞t) j, where i and j are unit vectors along x and y-axes respectively. If the particle is at the origin at t = 0, then its distance from the origin at time t = 3π/2∞ will be

Choices

Choice (4) Response
a.

((4πu02ω)2+a2)

b.

((3πu02ω)2+a2)

c.

((3πu02ω)+a2)

d.

((3πu02ω)2+a)

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